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Integration of wideband joint spatio-temporal spectrum sensing in wireless cellular system (coherent and non-coherent variant) is proposed as preliminary innovative idea. It provides that cellular systems as licensed users should use unoccupied licensed frequency bands assigned to other licensed users. Such cognitive properties integrated in cellular systems should improve their performances both...
Availability of modern, reliable and offering a wide range of services wireless communication systems is crucial for the effective operation of Public Protection and Disaster Relief (PPDR) agencies during the emergency situations. This paper presents the elements of the financial-economic analysis for acquiring and operating PPDR communication systems by the interested entities. It deals with business...
As the mobile communication technology evolves towards the cloud RAN based 4G and 5G systems, data traffic of a BS fronthaul which is mainly packed up of sampled baseband TRx signals increases geometrically and makes it hard the existing technologies over optical link handle such a traffic. In this paper, a new fronthaul based on RRPH which integrates baseband PHY into the RRH in order to minimize...
Recently flash memory devices have been widely used in mobile storage systems. Users run various applications that require frequent access to data in the storage. However, the storage data access is usually handled through several software layers in host systems, and therefore the storage performance may be affected by individual software layers as well as sophisticated interaction between them. In...
Wireless broadband access is a crucial part of any carrier and enterprise network. It has been a big argument among expertise which type of technology should be leveraged to fulfill the business needs. They argue which of the broadband technology is the best fit to propose solution and based on which criteria the right technology should be selected. In this paper we have elaborated on five key technologies...
In this article we discuss a case of a cellular network with backhaul operated wirelessly on millimeter waves (mmWaves). We perform extensive studies based on ray-tracing and system-level simulations to assess performance of such deployments. For the purpose of the evaluations we propose a backhaul topology optimization algorithm that allows assessment of the gateway (GW), i.e. nodes with wired backhaul,...
In this position paper, we identify the potential of an integrated deployment solution for energy efficient cellular networks combining the strengths of two very active research themes: software defined radio access networks (SD-RAN) [1] and decoupled signaling and data transmissions, or beyond cellular green generation (BCG2) architecture, for enhanced energy efficiency [2]. While SD-RAN envisions...
Energy-efficient cell breathing is a mechanism that consists of adapting cell sizes and number of active Base Stations (BS) to the distribution and current levels of traffic. In this article, our goal is to analyse the effect of such a technique on the electromagnetic (EM) radiation levels for mobile phone devices. Although there exist large details in the literature of cell-breathing on energy-efficiency...
This paper proposes a model for the management of virtual radio resources. The virtualisation of radio resources is based on aggregating and managing all the available physical radio resources in a set of infrastructures. In this approach, Virtual Network Operators (VNOs) use wireless connectivity in the form of capacity per service, and do not have to deal with physical radio resources at all. Due...
For the future wireless networks, heterogeneous data traffic services, i.e., variant bit-rate (VBR) service and constant bit rate (CBR) service are needed to be supported. The optimal power allocation algorithm for the non-orthogonal AF (NAF) Relays-assisted multicast transmission, which may be suitable for the VBR service, has been investigated in [2]. However, the power allocation algorithms for...
The mobile network plays an important role in the evolution of humanity and society. However, due to the increase of users as well as of mobile applications, the current mobile network architecture faces many challenges. In this paper we describe V-Core, a new architecture for the mobile packet core network which is based on Software Defined Networking and Network Function Virtualization. Then, we...
The next generation of wireless networks will integrate multiple radio access technologies, which constitute the heterogeneous network. The performance of the network and user experience will depend on a good use of the radio resource heavily. With the development of mobile Internet, a large amount of intelligent terminal applications emerge. Specifically, the multimedia applications, which will take...
There is a broad consensus on the vision that future transport network architecture will be dominated by optical in combination with packet. This implies a complete reassignment of the functions traditionally handled by legacy intermediate layers to packet and optical layers only. Here current advances in photonics technologies and architectures enable the optical layer to become the ideal companion...
Mobile services are evolving rapidly, moving from their conventional mobile voice to a wider portfolio such as Internet access, entertainment, health, and also location-based services. A wide range of on-board mobile services with very different requirements is also offered by automotive manufacturers. They rely on Mobile Network Operators (MNOs) to offer the expected connectivity and QoS in markets...
The vital trend inside wireless networks is the heterogeneity of access technology. Vertical handover management is one of key challenges in such environment to ensure seamless mobility and service continuity especially in the case of network mobility. To deal with some of these challenges, numerous efforts were made in the context of standards and scientific research to perform the vertical handover...
This paper describes a device triggering optimization technique for controlling system overload when deploying massive Machine Type Communication (MTC) devices in 3GPP-based cellular networks. Triggering a large number of MTC devices can dramatically overload the underlying transport network system and incur congestion in both the Radio Access Network (RAN) and the Evolved Packet Core (EPC). The proposed...
Past years have witnessed the surge of mobile broadband Internet traffic due to the broad adoption of a number of major technical advances in new wireless technologies and consumer electronics. In this respect, mobile networks have greatly increased their availability to meet the exponentially growing capacity demand of modern mobile applications and services. The upcoming scenario in the near future...
Virtualisation of cellular networks can be seen as a way to significantly reduce the complexity of processes, required nowadays to provide reliable cellular networks. The Future Communication Architecture for Mobile Cloud Services: Mobile Cloud Networking (MCN) is a EU FP7 Large-scale Integrating Project (IP) funded by the European Commission that is focusing on how cloud computing and network function...
In 3rd Generation Partnership Project (3GPP), enhancements of Diverse Data Applications (eDDA) work item has targeted at improving always-on connectivity for smartphones, identifying and specifying mechanisms at the Radio Access Network (RAN) level to enhance the ability of 3GPP Long Term Evolution (LTE) to handle diverse traffic profiles. The key aspects are the Radio Resource Control (RRC) release...
Cloud computing will have profound impacts on wireless networks. On one hand, the integration of cloud computing into the mobile environment enables mobile cloud computing (MCC) systems; on the other hand, the powerful computing platforms in the cloud for radio access networks lead to a novel concept of cloud radio access networks (C-RAN). In this paper, we study the topology configuration and rate...
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